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Finding the Fourth Proportional to 18,952.08, 28,431.36 and 5,803.08

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Solution

The fourth proportional to 18,952.08, 28,431.36 and 5,803.08 is: 8,705.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,952.08 : 28,431.36 = 5,803.08 : x
  2. Step 2: Convert to fraction form
    18,952.08/28,431.36 = 5,803.08/x
  3. Step 3: Cross multiply
    18,952.08x = 28,431.36 × 5,803.08
  4. Step 4: Simplify right side
    18,952.08x = 164,989,456.59
  5. Step 5: Solve for x
    x = 164,989,456.59/18,952.08
  6. Step 6: Final answer
    x = 8,705.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.